Plastic fine mist sprayer, 18/415, black, 115 mm

The plastic spray pump with a 18/415 thread is a closure that turns an ordinary narrow-necked bottle into a practical spray with a fine mist. It is suitable wherever a liquid is to be applied evenly and in small amounts – to facial toners, hydrosols, facial and hair mists, textile and air fresheners, hand sanitising solutions or cleaning liquids. The black head with a transparent dip tube looks discreet and goes well with both amber and clear bottles.

The spray pump is suitable for use with cosmetic products and has an issued declaration of conformity. It is of both cosmetic and technical quality, so it serves equally well in making cosmetics as in misting plants or dispensing cleaning solutions around the home or workshop.

How the spray pump works

When the head is pressed, the piston draws the contents up through the dip tube and forces them out through the nozzle, which breaks them into tiny droplets. One press releases the same dose every time, roughly 0.14 ml, so the product is easy to dose and nothing is wasted. The mist is fine and suitable for applying directly to the face or hair without soaking the skin.

Before first use, the spray pump needs to be primed – press the head several times without load until the dip tube fills and the first dose comes out as a mist. This is normal behaviour of any mechanical spray pump, not a fault.

Which contents it is suitable for

The spray pump works reliably with contents that have a viscosity close to water:

• Aqueous solutions – toners, hydrosols, facial mists, floral waters, solutions of active ingredients in water.
• Water-alcohol contents – air and textile fresheners, hand sanitiser, hair sprays with alcohol, perfumed waters with a lower proportion of fragrance substances.
• Very light emulsions – thin "spray milk" type mists, if they are homogeneous and stable; it is advisable to check suitability in advance.
• Technical liquids – cleaning solutions, water for misting plants, water-diluted preparations.

Thick emulsions, gels and products with solid particles (scrubs, undissolved powders) do not belong in the spray pump – the nozzle will not atomise them or will clog.

Choosing the bottle and the dip tube length

The spray pump fits bottles with a 18/415 neck type – the number gives the neck diameter and the thread type, which must match exactly, otherwise the closure will not seal. Bottles with the same neck and ready-made bottle + spray pump combinations can be found in the Handymade range; for your own combination we recommend checking the seal and the behaviour of the packaging with the specific formulation.

The dip tube length is matched to the height of the bottle. The tube should end just above the bottom so that the spray pump draws out almost all of the contents while not kinking. With a taller bottle, the contents at the bottom would remain unused; with a shorter one, the tube can be trimmed.

The bottle is filled to its nominal volume, not to the brim. The nominal volume is the volume the packaging is designed for under normal filling; the total volume up to the neck is larger and the difference provides a reserve for the dip tube and the spray pump head. If the bottle is filled to the brim, the contents overflow once the closure is fitted.

Good to know

• Preparation before first filling – spray the pump through with clean water or ethanol and let it dry; this removes any residues from manufacturing and transport.
• Material – both the head and the dip tube are made of polypropylene (PP), which handles water, alcohol and common cosmetic ingredients well. With contents high in essential oils or organic solvents, it is advisable to verify the material's behaviour in the finished formulation.
• Preservation of the contents – the spray pump limits contact of the contents with air and hands, but aqueous products still need a preservative. The closure alone does not ensure microbial stability.
• Reuse – after emptying, spray the pump through with warm water and then ethanol and let it dry. When switching the contents to a different type of product (for example from a perfumed water to a toner), it is better to use a new piece so that fragrances do not carry over.
• Clogged nozzle – if the mist weakens, it is usually dried content in the nozzle. Spraying through with warm water or briefly soaking the head will help.
• Recycling – polypropylene is among the commonly recyclable plastics; after use, rinse the spray pump and put it in the plastic waste.

Frequently asked questions